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68391301 = 11311311531
BaseRepresentation
bin1000001001110…
…01000110000101
311202200122020011
410010321012011
5120002010201
610441510221
71460213356
oct404710605
9152618204
1068391301
1135672440
121aaa2371
1311227534
149123d2d
15600e151
hex4139185

68391301 has 16 divisors (see below), whose sum is σ = 77654016. Its totient is φ = 59670000.

The previous prime is 68391293. The next prime is 68391307. The reversal of 68391301 is 10319386.

It is a cyclic number.

It is not a de Polignac number, because 68391301 - 23 = 68391293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68391307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43906 + ... + 45436.

It is an arithmetic number, because the mean of its divisors is an integer number (4853376).

Almost surely, 268391301 is an apocalyptic number.

It is an amenable number.

68391301 is a deficient number, since it is larger than the sum of its proper divisors (9262715).

68391301 is a wasteful number, since it uses less digits than its factorization.

68391301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 68391301 is about 8269.9033247070. The cubic root of 68391301 is about 408.9469326956.

The spelling of 68391301 in words is "sixty-eight million, three hundred ninety-one thousand, three hundred one".

Divisors: 1 11 31 131 341 1441 1531 4061 16841 44671 47461 200561 522071 2206171 6217391 68391301